From 8bfa034f337434d30bbc5688c8e858db3181cba6 Mon Sep 17 00:00:00 2001
From: Pavel 'LEdoian' Turinsky <ledoian@matfyz.cz>
Date: Fri, 21 Feb 2025 01:20:18 +0100
Subject: [PATCH] =?UTF-8?q?AP=20for=20clients=E2=80=A6?=
MIME-Version: 1.0
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---
 machines/loc1ap/attach.sh   |  6 ++++++
 machines/loc1ap/opts.shs    |  3 +++
 machines/loc1ap/run-shim.sh |  7 +++++++
 machines/loc1ap/setup.sh    | 25 +++++++++++++++++++++++++
 machines/loc1ap/start.sh    | 12 ++++++++++++
 machines/loc1gw/start.sh    |  2 +-
 networks/loc1_cli/up.sh     |  5 +++++
 7 files changed, 59 insertions(+), 1 deletion(-)
 create mode 100755 machines/loc1ap/attach.sh
 create mode 100644 machines/loc1ap/opts.shs
 create mode 100755 machines/loc1ap/run-shim.sh
 create mode 100755 machines/loc1ap/setup.sh
 create mode 100755 machines/loc1ap/start.sh
 create mode 100755 networks/loc1_cli/up.sh

diff --git a/machines/loc1ap/attach.sh b/machines/loc1ap/attach.sh
new file mode 100755
index 0000000..9d0b686
--- /dev/null
+++ b/machines/loc1ap/attach.sh
@@ -0,0 +1,6 @@
+#!/bin/sh
+set -eu
+. ./lib.shs
+. machines/$mach/opts.shs
+
+nsenter --wdns=$nethorror_root $namespaces "$@"
diff --git a/machines/loc1ap/opts.shs b/machines/loc1ap/opts.shs
new file mode 100644
index 0000000..f0998ef
--- /dev/null
+++ b/machines/loc1ap/opts.shs
@@ -0,0 +1,3 @@
+#!/bin/false
+
+namespaces="--net=./state/$mach/netns --mount=./state/$mach/mntns"
diff --git a/machines/loc1ap/run-shim.sh b/machines/loc1ap/run-shim.sh
new file mode 100755
index 0000000..2f42dd8
--- /dev/null
+++ b/machines/loc1ap/run-shim.sh
@@ -0,0 +1,7 @@
+#!/bin/sh
+
+set -eu
+. ./lib.shs
+
+ensure_started
+attach machines/$mach/setup.sh
diff --git a/machines/loc1ap/setup.sh b/machines/loc1ap/setup.sh
new file mode 100755
index 0000000..3427428
--- /dev/null
+++ b/machines/loc1ap/setup.sh
@@ -0,0 +1,25 @@
+#!/bin/sh
+set -eu
+
+. ./lib.shs
+
+# typically: bring up the networks
+ip link set dev lo up
+
+setup_for_router
+
+# ISP network
+ip addr add 10.0.0.2/24 dev isp_ve
+# NAT: use 10.0.0.0/24 inside the network and 192.168.0.1/24 for the client network
+nft add table ip nat
+nft add chain ip nat postrouting { type nat hook postrouting priority srcnat \; }
+nft add rule ip nat postrouting oifname \"isp_ve\" ip saddr 192.168.0.0/24 masquerade
+ip link set dev isp_ve up
+ip route add default via 10.0.0.1 dev isp_ve
+
+# network for clients
+ip addr add 192.168.0.1/24 dev cli_vwlan
+# No IPv6 at public spaces lol
+ip link set dev cli_vwlan up
+
+# TODO: DHCP server!
diff --git a/machines/loc1ap/start.sh b/machines/loc1ap/start.sh
new file mode 100755
index 0000000..ef45631
--- /dev/null
+++ b/machines/loc1ap/start.sh
@@ -0,0 +1,12 @@
+#!/bin/sh
+set -eu
+. ./lib.shs
+. machines/$mach/opts.shs
+
+setup_statedir
+
+unshare $namespaces /bin/true # just create the namespaces
+
+veth_to_bridge isp_ve loc1_ap ve_loc1ap_ap
+# TODO: make it virt_wifi (need to read iproute2 src…)
+veth_to_bridge cli_vwlan loc1_cli ve_loc1_wifi
diff --git a/machines/loc1gw/start.sh b/machines/loc1gw/start.sh
index 4fddaf5..afae425 100755
--- a/machines/loc1gw/start.sh
+++ b/machines/loc1gw/start.sh
@@ -8,4 +8,4 @@ setup_statedir
 unshare $namespaces /bin/true # just create the namespaces
 
 veth_to_bridge up_ve loc1_up ve_loc1up_gw
-veth_to_bridge ap_ve loc1_ap
+veth_to_bridge ap_ve loc1_ap ve_loc1ap_gw
diff --git a/networks/loc1_cli/up.sh b/networks/loc1_cli/up.sh
new file mode 100755
index 0000000..19c7ca2
--- /dev/null
+++ b/networks/loc1_cli/up.sh
@@ -0,0 +1,5 @@
+#!/bin/sh
+set -eu
+
+. ./lib.shs
+make_bridge